Infants let mosquito bites have red bags belong to insect bite dermatitis, can be adjusted through general treatment, drug treatment and other measures. 1. General treatment: away from the environment of mosquitoes, mosquito prevention and mosquito treatment, to avoid biting again, avoid local scratching. 2. Drug treatment: you can use glycerine lotion, you can also choose hydrocortisone ointment, dexamethasone ointment and other glucocorticoid drugs for treatment. When itching is obvious, you can take antihistamine drugs such as cetirizine hydrochloride drops orally to reduce itching. Infants with insect bite dermatitis, need to go to the hospital in time, under the guidance of the doctor to use medication.